Clarkstown South Senior High School
🇺🇸 Official data · 2025West Nyack, New York 10994 · Clarkstown Central School District
#91 of 1,079 high schools in New York
#105 of 16,910 nationally
About Clarkstown South Senior High School
Clarkstown South Senior High School is a public high located in West Nyack, in the Clarkstown Central School District school district of New York, United States. It caters for Grades 9–12. In 2025 it enrolled 1,386 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 92.8 out of 100, placing it in the top 5% of high schools in United States and 91st of 1,079 ranked high schools in New York. Its strongest component is math proficiency (100th percentile), and its weakest is students per teacher (72th percentile).
Other published figures: enrollment 1,386.
There are 6 schools in West Nyack; Clarkstown South Senior High School ranks 1st of 6 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)99.5%
- Reading proficiency (30%)98%
- Community advantage (fewer free/reduced-price lunch) (25%)22.8%
- Students per teacher (15%)12.2
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Clarkstown South Senior High School by the official sources.
- Enrollment
- 1,386
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 22.8%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 12.2
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 98%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 99.5%
- Share of tested students proficient or above (all students, all grades).
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Schools near Clarkstown South Senior High School
Closest schools by straight-line distance, with their Success Index (US).
West Nyack Elementary School
West Nyack · Public elementary · Grades K–5
304 students · 1.4 km away
Bardonia Elementary School
Bardonia · Public elementary · Grades K–5
351 students · 1.4 km away
Felix Festa Character Middle School
West Nyack · Public middle · Grades 6–8
612 students · 2.2 km away
Felix Festa Determination Middle School
West Nyack · Public middle · Grades 6–8
679 students · 2.2 km away
Felix Festa Achievement Middle School
West Nyack · Public middle · Grades 6–8
609 students · 2.2 km away
Strawtown Elementary School
West Nyack · Public elementary · Grades K–5
314 students · 2.2 km away
A Macarthur Barr Middle School
Nanuet · Public middle · Grades 5–8
635 students · 2.4 km away
Nanuet Senior High School
Nanuet · Public high · Grades 9–12
745 students · 2.5 km away
Laurel Plains Elementary School
New City · Public elementary · Grades K–5
369 students · 2.8 km away
George W Miller Elementary School
Nanuet · Public elementary · Grades K–2
409 students · 2.8 km away
Similar schools
Public high schools in New York with a comparable Enrollment.
Valley Central High School
Montgomery · Public high · Grades 9–12
1,385 students
West Genesee Senior High School
Camillus · Public high · Grades 9–12
1,385 students
Riverdale/Kingsbridge Academy (MS/HS 141)
Bronx · Public high · Grades 6–12
1,383 students
Niskayuna High School
Schenectady · Public high · Grades 9–12
1,379 students
Lockport High School
Lockport · Public high · Grades 9–12
1,377 students
Beacon High School
New York · Public high · Grades 9–12
1,372 students
Frequently asked questions
Is Clarkstown South Senior High School a good school?
Clarkstown South Senior High School has a Success Index (US) of 92.8 out of 100 (Top 5% of high schools in United States) and ranks #91 of 1,079 in New York. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Clarkstown South Senior High School rank in New York?
Clarkstown South Senior High School ranks #91 of 1,079 high schools in New York and #105 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Clarkstown South Senior High School?
Clarkstown South Senior High School had 1,386 students in 2025.
Is Clarkstown South Senior High School a elementary school or a high school?
Clarkstown South Senior High School is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Clarkstown South Senior High School?
There are 10 schools within 15 km of Clarkstown South Senior High School; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.